Abstract: An connector assembly for use in, for example, a hearing aid, the assembly having a first connector and a second connector adapted to be detachably attached and being able to transport both sound and electric signals. The invention also relates to an assembly comprising the connector assembly and having a first part comprising an electrical input and a sound providing receiver as well as both an audio output and an electrical output. The two outputs are connected to a second element, normally for positioning inside an ear canal of a person, the second element having a receiver for receiving the electrical signal from the first elements and providing a corresponding sound which is mixed with the sound output by the second element, the mixed sound being output from the second element. The receiver of the first element may be a woofer, and the receiver of the second element may be a tweeter.